Apparatus for making tuft buttons and the like



July 24, 1951 .L-A. DAYTON EI'AL APPARATUS FOR MAKING TUFT BUTTONS AND THE LIKE 6 Shoots-Sheet 1 Filed July 15, 1947 JAMES A. DAYTON- WALTER C.STAIRE. M M

July 24, 1951 J. A. DAYTON ETAL APPARATUS FOR MAKING TUFT BUTTONS AND THE LIKE 6 Sheets-Sheet? Filed July 15, 1947 lNvENT'oRs JAM ES A. DAYTON. WALTER C.STAIIE'E.

ATTORNEYS.

J A. DAYTON ET AL APPARATUS FOR MAKING TUFT BUTTONS AND THE LIKE Filed July 15, 1947 July 24, 1951 6 Sheets-Sheet 5 ATTORNEYS.

m s m N N Y T E A5 W D 55 M A A JW J. A. DAYTON 51'' AL APPARATUS FOR MAKING TUFT BUTTONS AND THE LIKE Jul 24, 1951 6 Sheets-Sheet 4 Filed July 15, 1947 BAY W M ATTO R N EYS- y 2 1951 .1. A. DAYTON ETAL 2,561,912

APPARATUS FOR MAKING TUFT BUTTONS AND THE LIKE Filed July 15, 1947 6 Sheets-Sheet 5 III-ll mun-nu INVENTORS E JAME5A.DAYTON. I \J I WAL TE.R C.5TAH2E.

i I %WL ATTO FQ N EVS July 24, 1951 J. A. DAYTON ETAL APPARATUS FOR MAKING TUFT BUTTONS AND THE LIKE Filed July 15, 1947 6 Sheets-Sheet 6 rmvrzm'roaes JAMEs A. DAYTON.

WALT $.12 CLSTAHEE BY 72ml W TTORNEYS 'ture in a head member.

invention, reference being had 'for this Patented July 24, 1 951 APPARATUS roBMAKmG'rUFTBU'rfroNsl' f. I

AND'TH'E LIKE James A. Dayton, Litchfield, andJWalterC. Stake,-

Torrington, -Gonn.,xassignors to The Turner & Seymour Mfg. 50., .Torrington, {Gonn a corpo V ration o fl nssiiev Application July 15, 1947; Serial No.1 760.968

' This invention relates to a machine formakin headed fastenings, and moreparticularly toa machine for making such fastenings hajiiinga shank suitably formed and secured in a head apertura The invention has to do with mechanisrn -for forming a shank of any particular shape, and the securingof a free end of the shank inan'aper- The invention further relates to the forming of the head member'to provide a tapered central aperture to receive the free end of the shank, and the upsetting of the shank within the aperture to expand the shank into-"en gagement with the wall of'the taperedaperture, and the subsequent headingover of the shank end to engage the face of the head inemberat the smaller end of the tapered aperture.

The invention further provides for the forming of-a button shank with a loop and shoulders spaced from the head to be subsequently secured to the shank, and'inechanism for rigidly holding the shank thus formed during upsetting of'the shank metal within an aperture in the head as aforesaid. I ff.

Additionally there is provided-a feedingm'echanisin for the heads of the fastening "means adapted to deliver the heads in proper relation to receive the shanks, together with mechanism; for positioning the heads upon their respective shanks, and for confining'the upsettingof'the shanks to theportion thereof adapted to directly engage the button head.

The above and other novel features of theinvention will appear more fully from the following detailed description when taken in conjunction with the accompanying drawings- E is to-=be understood, however, that the drawings are-em} .ployed for purposes of illustration ionly and ai'e not designed as a definition of the ilirnits o'f' the purposeto the appended claims. i

In the drawings, wherein like reference-nu .rnerals,indicate like partss v Fig. 1 is a top plan view ofthe machineowith overlying parts removed; 1

' Fig. 2 is a wire feed power take off detail sectiontaken substantially on the line 22 of Fig. 1; Fig. 3 is another detail of the wire feed: power take oif taken substantially on the line 3' -3= of Fig. 1; e

Fig. 4 is a transverse section through the center .of the machine, taken substantially on theline 44 of Fig. 1, showing the feed and. discharge paths;

Fig. 51s a front'elevational view ofthe feed hopper drum shown in Fig. 4;

tion;

s'caims. (Cilia-.2;

. Fig.6 is a sectional. detail. view taken substantially on theline 6+6L0fFig. 7 is a sectional detail taken substantially on theline'L-l of'Fig.5;1-.. v. v

- Fig. 8=is an enlarged sectional detail ofia part ofthe feed channel of-Figl 4; i 1 Fig.9 is an enlarged top plan view. of the-cen tral portion of 'theapparatus with partsfin sec-'- tion; showing the mechanism in finishingposi- Figs. 1c, 11 and 12 are fragmentary enlarged side-views partly in section of the tufting button head-"feed? and stem. riveting plunger showing successiire stages of operation, Fig. IZ-being taken substantially on the-line l 2l 2 of Fig. -9 and corresponding otherwise to the stage ofoperation thereshowm' I s Fig--13 is a deta'il sectional viewof the stripper taken substantiallyon the'line l3-"l3 of Fig-=11; Figs-1e, 15 and 16 are fragmentary plan views Fig. l? is an enlarged sectional view-of a tufting button positionedwithin the apparatus at-the riveting stage and isa sectiontaken on theline ll-l'l of Fig-. 12; Fig. l8 is an enlarged sectional view of the wire feed and cutter taken substantially onthe line 18- 18 ofFig; 14; 1 :v z e.

substantially Figs-le is alongitudinal section of the dies employed to form the button heads;

Fig.- 20 is a longitudinal sectional view of a Fig-1 21 is a plan-view of the plunger of Fi'g iZO;

" -Fig. 22'is a-front end elevation of the plunger Fig. 23 is a transverse section taken on' the line 22 -23 of Fig-20x v l Referring to the drawings, and more particularlyt'o Figs; land 4-for a general layout of the machine; there is shown a' fra'zne' or bed plate!!! 1'1aving-horizontal ways or Slidfisflfl and Hand and 36 arranged atrightangles' to one another,

and-a material ieed38 extending vertically above the line'ofintersection-of said ways. Thevertical feed sup-ported from a pedestal-39 is adapted to delivertufting button heads (see Figs. l3and17) formed-from disks into the central portion of the inachine where half round- 'or" other suitably .shapedwire cut in lengths is'formedby jaws slidably-ar-ranged on said ways,-:into a 'loo'p 42, and

the free ends brought together and swaged into a tapered aperture M in the button-head MlfiThe frameis suitably provided with journals to receivehorizcntal power shafts 5il=and 52 and 54 :and- 56 extending around the frame'and at right angles to the ways, the shafts being intergeared with one another by bevel gears 58, 5i) and 62, so that all shafts operate at the same speed from the power shaft 50.

The formation of the wire loop 42 is accomplished by sequential operation of various jaws upon the ways described in combination with a forming anvil or bar and intermittent wire feeding mechanism. As Will appear in Figures and 17, a suitably shaped forming bar or anvil 64 supported in depending fashion from the feeding head 38 is rigidly secured to the pedestal 39. The anvil is somewhat arrow head in cross section, having a substantially fiat base 68, and sloping sides 10 joined by a rounded surface 12. The lower end of the bar 64 is located so as to intersect a wire feed path formed by the feed tubes 14 mounted on the machine bed plate by a bracket 16. The bore 18 of the feed tube may be adjusted so as to deliver half round wire 19 with its fiat side substantially tangential to the rounded surface 12 of the bar or anvil 64.

Slidably arranged within a guide channel 80 in the bracket 15, is a reciprocating cutting bar 82 having adjustably secured thereto a cutting head 84, with the cutting or shearing edge 85 offset and wiping the nose 13 of the wire feed tube 14 for shearing action. The bar is suitably reciprocated by a cam or eccentric 88 mounted upon the shaft 56.

Also driven by the shaft 56 is a cam 90 acting through follower 92, upon a reciprocating ram 84 traveling on way 30. The ram 94 is provided with a head '96, having a complementary notch 98 adapted to embrace the anvil or bar 34, and is also provided with a half round groove I00 extending horizontally across the face of the head andinto the face of the notch 98. The groove is aligned to receive a length of wire extending from the feed tube 14 and, through operation of the ram, wrap the wire about the forming bar 64, it being understood that the cutter B4 is so timed as to sever a predetermined length of wire when symmetrically disposed about the bar 54 and at approximately the time the ram commences to bow the wire about the forming bar 64. Completion of the stroke of the ram causes the wire to take the shape shown in Fig. 15, with the flat side of the half round wire bearing against the bar 64.

In order to bend the free ends of the wire to form a shank for afiixation within the aperture 34 in the button head 40, a pair of forming jaws Hi4 and I06 reciprocating on ways 34 and 36 are provided. Simultaneous motion is transmitted to the jaws by similar cams I08 and I I0 fixed to shafts 50 and 52, so that the forming tongues H2 and shoulders II4 (see Figs. 15-17) will close about the anvil or bar 64 in symmetrical fashion and bend the wires about the substantially flat surface 68, and at the same time provide a knee or right-angle bend at II6 so that the two half round ends combine to form a cylindrical shank H8. The tongues H2 each have half round grooves I05 and I01 in their faces adapted to complementally receive the half round wire. The grooves I05 and I01, and the jaws in combination with the anvil or bar 64, and the backing of the ram 94, are adapted to hold, and confine the shank wire in the position shown in Figs. 16 and With the ram 94 and the jaws I04 and I06 held loosely but closely surrounding the shank. A swaging and riveting operation expands and enlarges the free end II9 of the shank into tight engagement with the taper bore 44 of the button head, with subsequent riveting over the end of the shank.

It will be seen that the button head is formed from flat discs of metal with a central hole, by suitable mating dies which effect the final rounded flange and dished central part, the dies actually closely conforming to the surface contours of the button. The dishing action stretches the metal in such a manner as to render the aperture tapered, so that a shank when expanded therewithin and riveted over, will be securely positioned between the taper and the rivet head.

It Will also be seen that the shank is securely held during the upsetting operation and confined by the jaws, ram and forming bar to substantially prevent any upset except along the free end H9 of the shank and within the button head aperture.

To form the dished button head with the tapered hole 44 and rolled edge 45, mating dies 46 and 41 with a yielding countersink punch 49, and suitable ejectors 48, may be employed (see Fig. 19) in conjunction with a suitable press not shown, the dishing operation tending to deform a cylindrical hole in a flat blank into a tapered hole, and the center punch tending to slightly bevel or countersink the opening at its larger end and assist the formation of the taper. The centering punch or countersink 49 is biased by a preloaded spring 5 I, for application of a predetermined pressure.

The dies coact with a feed guide 53 along which fiat disc blanks are fed one at a time into the path of the die 41 from a stack 55. The guide is provided with a shallow channel 59, and the die 46 is correspondingly channelled as at 6 I, the width being slightly greater than the blank diameter, and slightly deeper than the blank thickness. The aperture 51 in the slide is of a diameter sufficient to support the marginal edge of a flat disc, prior to rolling of the edge. I The consequent reduction in diameter permits the shaped head to clear the aperture 51.

The button head feed mechanism is generally shown in Fig. 4 in which there is provided a rotary drum-like feed hopper I20 rotating on an inclined axis and having radial sorting grooves I22 in its end face. The hopper is provided with a motor drive I24, and the hopper grooves have sharp angular walls of a depth less than the button thickness so as to pick up button heads,

as at I26, provided the rounded or rolled side thereof is up with reference to the face, the grooves being too shallow to engage the rounded top faceof the button heads. 'The heads when properly arranged in the grooves are brought into position for dropping into a rectangular sectioned chute I28 adapted to feed the heads to a position suitable for upsetting the shank stem therein. A wire guard I30 and guard strip I32 within the i hopper assure correct positioning. of the heads for alignment with the channel I28, the wire I30 tending to kick out any head which may be in forming position about the anvil, the free end II9 of the shank H8 is securely fixed for placing thereon a button head with its aperture wrongside up or not properly seated in its groove.

The chute is provided with a relief opening I34, and a by-pass chute I36, so that the number of button heads in the vertical portion of the chute will remain constant for even loading, the excess by-passing through-the opening I34 into a bin I38. The lower end of the chute I28 terminates at a reciprocating plunger I adapted to recipa e a rocateon way 32, power being applied by the cam I42 keyed to shaft 54. The plunger head. I43 provided with a recess I44, of the correct size and shape to ,receive a single button head, and is adapted tocut off the supply of heads when reciprocated to the left, as shown in Figs. 11 and 12. The plunger head is mounted for slight movement with respect to the plunger proper I46, upon dowel pins I41 and is biased to an advance position by a coilspring I48, such position being determined by the shoulder I49 formed by the head of the dowel pins M1. The button head is thus positioned and held with the shank free end I I9 within the aperture 44 of the head, with the buttonhead against the jaws I04 and I06, while the ram completes its stroke, bringing a heading punch II into engagement with the shaft II8, upsetting the shank, and expanding the same into the tapered aperture thereof as at I50 with subsequently riveting over of the shank ends as at I52 (see Fig. 17 and also Fig. 12) in the riveting recess of the punch as provided.

Upon completion of theheading punch movement just described, all of the reciprocating parts, the jaws I04 and I06, the plunger I46 and the ram 94 are withdrawn through action of their respective cams, and thereafter a stripper I54, having a bifurcated end I56 is causedto slide downwardly upon the bar 64 to for'ce'the shank to slide off the end of the bar onto a guide wire I5Isecured in the end of the bar 64 and adapted to guide the tuftingbuttons to a suitable receptacle I58. Movement of the stripper is eifected through a cam I60 on shaft 54, the same actuating a bell crank andfollower I62 connected to the upper end of the stripper bar as at I64. The re:- ceptacle is provided with a wire grid I50 to screen the buttons from foreign particles and scrap.

1 When the plunger head is returned to the position shown in Fig. 10, a button head is permitted to drop into place in the recess I44 and is held in position by a spring biased tongue or dog I66 mounted in a slot I68, and keyed to a shaft I10. The shaft is provided with a crank I12 and suitable biasing spring Il4. A stop pin I'IB limits the travel of the tongue to prevent binding upon the heads, and permit'free travel of button headstherepast. A light flexible spring lip H7. in the form of a thin strip attached to the'head I43 forms a ledge to seat the button heads in the recess I44, and is flexed over the button head upon the return stroke of the head.

While all of the jaws, ram, and plunger are in their retracted position, the wire feed mechanism I'IB, driven from shaft 50 through the gears I80 and I82 and counter crankshaft I04, link I86, lever I80 and connecting rod I90, is caused to advance a section of wire of predetermined length throughthe wire feed tube I4 for the succeeding button. Thereciprocating wire feed mechanism, which may be of any well known form, simply grips the wire in a manner well understood in the art, advances the same,.and thereafter holds the wire in advanced position, while being cut and until the succeeding cycle when the wire is advanced an additional length. It will be seen that all .the various element sliding on the ways are suitably timed in their relative motions, and that power is applied to the entire apparatus through a clutch 65 and drive pulley 63.

In Figures 20 to 23inclusive, .a somewhat modie fied form of plunger, and heading punch is shown in which a plunger carried bifurcated retaining member 2 I 0 is provided in place of the chute carried'dog I66 of Figs. -12, and spring lip I11.

Theplunse izbody 200 is ,providedwith a plunger head 202, resiliently biasedby a spring 204 arranged on aguide pin 206. Dowel pins 20I:and othenshouldereddowelpins 208 screw threaded in the head 202 and slidable in the plunger body 200, similar to pins I41 (see Fig. 10) are provided to limit thespring biasedmovement. The head 202 is provided with a button head receiving recess 2H), :and a heading punch 2I2 extending through the head 202and secured to the plunger 200. in an internally and externally threaded adjustment sleeve 2I4, locked in place by ,thecapstan nut 2I6. To. hold a button head in placein the recess 2 I0, the bifurcated retaining member in the form of a resilient forkedstrlpZIB. is mounted on a pair of swinging arms 220. The arms, are adapted to engage a stationary bumper bar .222, to retract the forked strip 2I0'just prior to .the plunger head reaching the positionshown n Fi 9-- The bumper bar 22 is supportedupon a bracket 224 secured tothe frame or bedplate 28. From the foregoing description it will appear that there isprovided an apparatus capableof rapidly producing tufting buttons of the form shown, and whichmay be altered, to secure .varlous shapedlshanks within a tapered aperture in a button head, byanupsetting and riveting ac,-

tion, and that the various jaws and ramsnot onlyact to Shape the particular shankdisclosed. but also act to support and rigidlly hold :the shank, durlng the upsetting operation. In this latter functiomthe particular shape to which the jaws and ram are adaptedmay be widely varied to suit any form of shank for the purpose ofremsetting operation. i

While the invention has been illustrated and describedin a single apparatus adapated to spe-r ciiically fabricate a specific construction, with a mQdifiQafiOIl Qf; a portion thereof, it is to. .be understood that the invention is not. limited thereto but may be embodied in various modified forms. Asmany changes in construction and arrangement of parts may bemade to accommod-atevariations in the fabricated construction desired without departing from the-spirit of the invention, as'will be apparent to those skilled in the art, after an understanding'of the invention, reference will behad to'the appended clalin's for a gerizmtion 10f the limits of the invention a is caimed and desired Letters Patent is: to be segured 1 .1.. 'In: apparatus for forming tufting buttons havmgan apertured head and a looped shank secured therein-by upsetting which co'mprisesf'a formmglbar, a ram adapted to bend a predetermined length of wire symmetrically about said barto form a bight having free ends, 'a' pair of opposing jaws mounted for movement transverse"- ly of said ram and adapted to form said free ends about the remainder. of said bar andarrange the extreme end portions'in parallel contacting relation, means. for feeding an apertured headin threading relation upon the end portions of said dering absolute support thereto during. theupwires, and means acting axially of said wire to compress said wire andexpand and upset at least a part of said extreme. end portions laterally into aperture wall engagement with said head.

2. Ina forming and upsetting machine for forming shanks and aflixation thereof to apertured heads, a forming bar,.a ram having a-recess complemental to a portion of saidbar, and a wirereceiving groove therein, means for feeding a predetermined length of wire between said ram and bar, in a position for bowing. about said bar tar, eiemem'a pppesea jaws havin wiree: c'eiv rsovesa d recesses to; ebmple'mefit 13 em ee the remainder efsara bar, and form said sa d wires aga nst said head.

Ari-app us for forming tufting maths hav ng snaps-wees Headand a looped shank secured the-rein by upsett ng w en eam-prises last names means for riveting the end of in: cbmbmauon; a symj' 'e r inr'hdvable transverselyof ai t6 bend a predetermined lng ihetridally about said was to fdrni a bigldt'hav'i'ng free ends, means rdr fej" iiig a length of it "e the surfacedf *saidhar in he 1:; h of said ram; and means for severin a st1dn"6f said wire u on joint dontaetdf said bar and rain therewith, apai'r of choosing jaws niouiit-ed for nio'vefneht cransv'ersen er said an and said bar an ada ted to for'ni the nee ends of the length or wire about therema-iffde'z of said tar and an range the extreme and portions-m parallel con tasting relation, means for feeding an apertures h'a'd threading relation upon the end bdrti'OiiS of said wires; and ineans aoting wire to compress said wire and 6 and nose at least a part of said extreme end fiortions lateially into engagement with said aperture.

v .4: In a formingand upsetting machine for forming shanks and a'fliiration thereof to am tured heads, a forrrii'ng bar, a ram having a re-- oss complemental to a portion of said bar; and a Wire receiving groove therein,- means for feed ing a predetermined length of wire between said ram and bar in aposition for bowing about said bar upon relative movement of said ram toward the bar, cutting meansyfor severing saidpredetermined length of wire-as said ram initially odmrnenoes to botv the wire about said bar, sup" plernenta l; opposed jaws having wire receiving grooves and recesses togcomplementally embrace the reniaihder of said bar, and form said Wire about said bar with the ends thereof arranged in partner ontacting relation; said jaws; bar and acting together to rigidly position said wire with its ends projeoting fromsaid jaws, means for threading a head having a tapered aperture onto the ends of; said wires, with the enlarged end or the tafier adjacent said jaws, andmeans for compressing said wires axially to upset and ex ipand said Wires into aperture wall engagement with saidhead, and means associated with said last named means for riveting the end" of said Wires against said head.

v A forming and upsetting machine for form- ;ingshanks, and afiixation thereof to apertured heads-comprising in combination, a plurality of loop forming means including rnovable' jaws adapted to1form a section of wire into alooii with the free ends thereo fextending:fiaralleland-iii :contact with one another, said 1061:)" forming meansadapted to holdsa'id paralle'hends against lengthwise movement and radial expansion; save forzth'eextrem'e end portions, meansadapted to move in parallel relation to the extending ends ally of said and adapted to hold an aeertured Button Heed having a, thickness substantially less than the length th' extfefifi: 'elld. DOTtiQIlS in 3) plan?! trahsve se' to said ends with the aperture-m align: frfent with said ends, said means being adapted to thread a biitto'n head iipon'sai'd extrern'e en s and Hold the same against said aws, and inea'ns so: upsetting said extreme endgame-11y,- while new against lon'gitudinal movement by said jawj e to e'xpa a the wire radially mm contact with the '"7 ap'ertirr. h

ring and upsetting ma'hine for form? i-ng sashes, and fa'fd'iz'a'tion thereof to a pr'tured had, bomb in Combination, a; plurality or not forming "eans mendin move-me jaws ea eo -tea:- was ant-tea; en map as for the ait reine end '0" ease-,- said heats i3e1 g' adapted to thr a button head bdn aia e treine ends and hold the same against as and ins-a s for ups t'ting-sai'd" f V e any; w 1 e herd against longitudinal movement b3; said javi' me ns to expand the wire 'r'sidialiy into contact with the button head ap'ertur said last named eans being adapted to unset e tip ends" to fo-rr'n' arivet need engaging said 7. A forming and upsetting machine camp rs: m means to eintr'ace and seeur'-lgx holda'stem on of a button shank against longitudinal with the rnajor 'portion thereof ta- *i'st latera ex ansion, and- With the 'ste'zri 'e'i'fd p'oiionextending beyond said means, Button head holding 'ns reciprocate toward said stein holding in an adapted tohol'd an a far threading" the end pdrj on 'hin-th'head aperture, and means ear'ri head holding and lo d i'iially the eof to engaging the endof sai portion "and uiisett'ifng' said end bortion axially thereof to sense said end b'ortion expand di'a'fiiet i" into s'n'ue engagerhent tv'i'th said aber- 4 y r .1 I o ffk f r t xei d firs 'ti f i dhie s prise ing rneans ti) embrace andsecurely hold a stem portion or a button shank against longitudinal movement, with the major portion ;thereof confined against lateral expansion, and an end ;por tion extending beyond said means; button head holding -means reciproc'able toward said stem holding means-adapted to hold an apertured but,- ton head for threading said stem end portion Within the head aperture; and; means Carried by said head holding means; and movable longitudinally thereof for engaging the endof said end: portion and "upsetting said'end portion axially thereof to cause said endbortion to expand in diameter i-n-to snug engagement with said aperture, and a riveting surface on said upsetting means for riveting over the end of the stem against-a button head threaded thereon.

9; An apparatus for forming tuft'ing buttons having" a taper a'per-tured head and a' looped shank-secured therein which comprises incornbination, a sy-rnm'etrioa-l forming bar, a recipro' cating ram movable transversely of said forming bar having a recess complementary to said bar and a transverse wire receiving groove, means to feed a length of wire between said ram and transversely across said forming bar, means for severing a section of said wire symmetrically disposed with respect to said forming bar upon joint contact thereof by said ram and bar, jaw means for forming the ends of the Wire section ends thereof in contacting parallel relation to about the back of said bar and for bringing the form a stem, a reciprocating plunger having a button head receiving recess, adapted to thread a button head with a central aperture upon said stem, said plunger having an upsetting and riveting punch in axial alignment with said stem, and adapted to engage the end thereof, and means for moving said punch relative to said head, to upset said stem for expansion into engagement with the walls of the button head aperture, a stationary gravity feed channel for said button head having a discharge end adapted for alignment with said plunger head receiving recess 10 I when in retracted position, and means for limiting the number of buttons in said feed channel.

JAMES A. DAYTON. WALTER C. STAIRE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Certificate of Correction Patent No. 2,561,912 July 24, 1951 JAMES A. DAYTON ET AL.

It is hereb certified that error appears in the printed specification of the above num ered patent requiring correction as follows:

Colnmn 6, line 20, for bar 22 read bar 222; line 38, for adapated read adapted; column 9, line 10, strike out end-s thereof in contacting parallel relation to and insert the same before form in line 12;

and that the said Letters Patent should be read as corrected above, so that the same may conform to the record of the case in the Patent Oflice.

Signed and sealed this 9th day of October, A. D. 1951.

[SEAL] THOMAS F. MURPHY,

Assistant Commissioner of Patents. 

